Strong decays of $T_{cc}^{+}$ at NLO in an effective field theory

Abstract

The $T_{cc}^{+}$ exotic meson, discovered by the LHCb Collaboration in 2021, can be interpreted as a molecular state of $D^{(\ast )0}$ and $D^{(\ast )+}$ mesons. We compute next-to-leading-order (NLO) contributions to the strong decay of $T_{cc}^{+}$ in an effective field theory for $D$ mesons and pions, considering contributions from one-pion exchange and final-state rescattering. Corrections to the total width, as well as the differential distribution in the invariant mass of the final-state $D$ meson pair are computed. The results remain in good agreement with LHCb experimental results when the NLO contributions are added. The leading uncertainties in the calculation come from terms which depend on the scattering length and effective range in $D$ meson scattering.

26 pages, 7 figures

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• A survey of heavy-heavy hadronic molecules
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Cited by in corpus (18)

• Solving the left-hand cut problem in lattice QCD: $T_{cc}(3875{)}^{+}$ from finite volume energy levels
• Higher molecular $P_{\psi s}^{\Lambda /\Sigma }$ pentaquarks arising from the ${\Xi }_c^{(\prime ,\ast )}{\bar{D}}_1/{\Xi }_c^{(\prime ,\ast )}{\bar{D}}_2^{\ast }$ interactions
• Fully charmed tetraquarks from LHC to FCC: Natural stability from fragmentation
• Hadronic decays of the heavy-quark-spin molecular partner of $T_{cc}^{+}$
• Exotic tetraquarks at the HL-LHC with JETHAD: A high-energy viewpoint
• Bottomoniumlike states in proton collisions: Fragmentation and resummation
• Doubly heavy tetraquark states in a mass splitting model
• Fragmentation of fully heavy tetraquarks: The TQ4Q1.1 functions as a case study
• Isospin violation effect and three-body decays of the $T_{cc}^{+}$ state
• Radiative decays of the heavy-quark-spin molecular partner of $T_{cc}^{+}$
• Spectroscopic Properties of Double-Strangeness Molecular Tetraquarks
• Hunting for the prospective $T_{cc}$ family based on the diquark-antidiquark configuration
• Tetraquark-Jet Systems at the High-Luminosity LHC
• All-charm tetraquarks at hadron colliders: A high-precision fragmentation perspective
• Hadronic molecules and multiquark states
• Production of hidden-heavy and double-heavy hadronic molecules at the $Z$ factory of CEPC
• Low-energy $N\varphi$ scattering from a pole-enhanced triangle diagram
• Low-energy $DD$ scattering in lattice QCD